Hi All, Hopefully you all read in the "Notes" (and Jay's and my comments) that TSX-Plus requires RT-11 as a prerequisite. RT-11 is readily available all over the Internet. It is also available at on the classiccmp server at http://www.classiccmp.org/PDP-11/ Cheers, Lyle -- 73 AF6WS Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"